Reverse WHOIS Search

By using one or more unique identifiers or terms found in a WHOIS record, find all the domain names related to it.

Get started free
Reverse WHOIS Search

Reverse Whois Search Tool helps you find all the Domain names corresponding to a particular ‘Search term’ such as a person’s or a company’s name, phone number, email address and any other Registration details contained in a WHOIS record.

5.2+ billion Historic WHOIS Records
582+ million Domains tracked
2,864+ TLDs tracking
10+ years of data crawling

Take more from WHOIS

Identify all connected domains

Identify all the domain names worldwide which share search terms anywhere in their WHOIS records. Find connections between various domains, individuals and organizations.

Get detailed information

Get the entire registration details set or WHOIS record of domains associated with the searched terms. You may search by specific attributes in the domain WHOIS Records.

Monitoring changes

Searched domains can be monitored for any changes by being added into the Domain Monitor.

Practical Uses

  • Use Reverse WHOIS data to detect spam, malicious websites, intrusions, and other online misbehaviors.
  • Identify new business and partnership opportunities and locate potential buyers through the contact details provided in the WHOIS database.
  • Check potential trademark infringements through searches to scope domain name similarities, duplicates, or copycats.

API Integration

Integrate our monitoring and search tools into your applications. Get instant access to one of the largest databases of WHOIS data through the IPA access. Quick and easy integration in a few minutes, without excessive programming!

Learn more about the API Integration

Trusted by
the smartest
companies

Let's get started?

You just in one step from making your business better!

Get started free
Have questions?
support@whoisxmlapi.com
We will get back to you within a day.
WHOIS API, Inc.

California
USA

Contact us